Leg : 81 Top/Bottom Interval(mm): 620/ 900 Analyst: Morton, A.C.
Hole: 552 Sample Midpoint (m) : 282.90
Core: 21 Top of Core Depth (m) : 279.00
Sect: 3 Top of Section Depth(m): 282.62
LITHOLOGY: PLAG-PYX PHYRIC BASALT;
FULL DESCRIPTION SEE 22-1;
Piece No. : PCE 1 (62-91);
Texture : PHYRIC, GRAIN SIZE IS GENERALLY FINER THAN
UNDERLYING SECTION, ONE PCE IN SEDIMENT HAS CHILLED
MARGINS SURROUNDING CENTRAL ZONE WITH VISIBLE PLAG
LATHS;
Structure : PCE IN SEDIMENT POSSIBLY A SMALL PILLOW;
Comments : ONE PCE LIES WITHIN SEDIMENT;
Vesicles : Size(mm): TO 5 Percent:
VESICULAR, DIFFERS FROM 22-1 IN THAT VESICLES ARE
LARGELY UNFILLED AND ARE LESS COMMON;
Phenocrysts: PLAGIOCLASE
PYROXENE
ID UNCERTAIN;
Leg : 81 Top/Bottom Interval(mm): 0/ 60 Analyst: Morton, A.C.
Hole: 552 Sample Midpoint (m) : 282.93
Core: 21 Top of Core Depth (m) : 279.00
Sect: CC Top of Section Depth(m): 282.97
LITHOLOGY: PLAG-PYX PHYRIC BASALT;
FULL DESCRIPTION SEE 22-1;
Piece No. : PCE 1 (0-6);
Texture : PHYRIC, GRAIN SIZE IS GENERALLY FINER THAN
UNDERLYING SECTION, ONE PCE IN SEDIMENT HAS CHILLED
MARGINS SURROUNDING CENTRAL ZONE WITH VISIBLE PLAG
LATHS;
Structure : PCE IN SEDIMENT POSSIBLY A SMALL PILLOW;
Comments : ONE PCE LIES WITHIN SEDIMENT;
Vesicles : Size(mm): TO 5 Percent:
VESICULAR, DIFFERS FROM 22-1 IN THAT VESICLES ARE
LARGELY UNFILLED AND ARE LESS COMMON;
Phenocrysts: PLAGIOCLASE
PYROXENE
ID UNCERTAIN;
Leg : 81 Top/Bottom Interval(mm): 0/1500 Analyst: Morton, A.C.
Hole: 552 Sample Midpoint (m) : 285.50
Core: 22 Top of Core Depth (m) : 284.00
Sect: 1 Top of Section Depth(m): 284.00
LITHOLOGY: PLAG-PYX PHYRIC BASALT;
Piece No. : PCE 1 (0-8), 2 (12-17), 3 (20-31), 4 (34-51),
5 (52-62), 6 (65-70), 7 (74-87), 8 (90-100),
9 (102-110), 10 (113-125), 11 (127-136),
12 (139-149);
Texture : PHYRIC, FINE-GRAINED GNDMASS;
Structure : OCCASIONAL FRACTURES (IN PCES 3+4+7+9-11), ALSO
INFILLED WITH BLACK MINERAL;
Comments : DARK GRAY TO GRAYISH BLACK (N3-N2);
Vesicles : Size(mm): TO 8 Percent:
Location: Filling: SMEC,PYRITE
VESICULAR, WIDESPREAD THROUGHOUT, INFILLED WITH
BLACK (N1) MINERAL IDENTIFIED ON XRD AS FE-MG
SAPONITE (SMEC) AND ALSO BRASSY YELLOW PYRITE,
PCE 1 HAS 2CM BAND WITH VESICLES RARE;
Phenocrysts: PLAGIOCLASE
Size(mm): TO 3
PYROXENE
ID UNCERTAIN, NUMEROUS;
SMECTITE
FE-MG SAPONITE;
PYRITE
BRASSY YELLOW PYRITE;
Leg : 81 Top/Bottom Interval(mm): 0/ 800 Analyst: Morton, A.C.
Hole: 552 Sample Midpoint (m) : 286.30
Core: 22 Top of Core Depth (m) : 284.00
Sect: 2 Top of Section Depth(m): 285.50
LITHOLOGY: PLAG-PYX PHYRIC BASALT;
SAME AS SECTION 22-1;
Piece No. : PCE 1 (1-13), 2 (15-24), 3A (27-30), 3B (31-39),
4A (42-50), 4B (50-61), 5A (65-72), 5B (72-78);
Texture : PHYRIC;
Structure : SAME AS SECTION 22-1 EXCEPT FOR FRACTURES INFILLED
BY WHITE FIBROUS CALCITE (PCES 1+3B+5B) IN ADDITION;
Vesicles : VESICULAR;
Phenocrysts: PLAGIOCLASE
PYROXENE
Replacement: CALCITE
WHITE FIBROUS CALCITE;
Leg : 81 Top/Bottom Interval(mm): 0/1300 Analyst: Morton, A.C.
Hole: 552 Sample Midpoint (m) : 289.80
Core: 23 Top of Core Depth (m) : 288.50
Sect: 1 Top of Section Depth(m): 288.50
LITHOLOGY: DRILLING BASALTIC BRECCIA;
Piece No. : NO PCE NUMBERS ASSIGNED, INTERVAL (0-130);
Comments : DRILLING BRECCIA OF BASALT AND CHERT AND DRILLING
MUD, CLASTS UP TO 1CM;
Leg : 81 Top/Bottom Interval(mm): 1300/1500 Analyst: Morton, A.C.
Hole: 552 Sample Midpoint (m) : 290.00
Core: 23 Top of Core Depth (m) : 288.50
Sect: 1 Top of Section Depth(m): 289.80
LITHOLOGY: PLAG-PYX PHYRIC BASALT;
PHYRIC VESICULAR BASALT WITH CALCITE VEINING AS
BEFORE;
Piece No. : PCE 1 (132-150);
Texture : PHYRIC;
Structure : CALCITE VEINING;
Vesicles : VESICULAR;
Phenocrysts: PLAGIOCLASE
PYROXENE
Replacement: CALCITE
Leg : 81 Top/Bottom Interval(mm): 0/ 600 Analyst: Morton, A.C.
Hole: 552 Sample Midpoint (m) : 290.60
Core: 23 Top of Core Depth (m) : 288.50
Sect: 2 Top of Section Depth(m): 290.00
LITHOLOGY: PLAG-PYX PHYRIC BASALT;
PHYRIC VESICULAR BASALT AS BEFORE;
Piece No. : PCE 1 (0-11), 2 (14-35), 3 (37-42), 4 (44-58);
Texture : PHYRIC;
Vesicles : VESICULAR;
Phenocrysts: PLAGIOCLASE
PYROXENE
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